Investigation of changes in vegetation cover associated with changes in its hydro-climatic drivers in recent decades over North Sub-Saharan Africa

Ogou, Faustin Katchele; Igbawua, Tertsea

doi:10.1007/s00704-022-04088-3

Cited by 4 publications

(2 citation statements)

References 72 publications

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“…This represented the existence of two opposing relationships between the effects of vegetation on SWC. On the one hand, large amounts of shallow SWC were consumed through vegetation self-growth [43] and transpiration [44]. On the other hand, vegetation and litter contributed to SWC by providing shade and retaining rain-fall to decrease evaporation [37].…”

Section: Control Factors For Swcmentioning

confidence: 99%

Environmental Factors Controls on Soil Water-Heat in the Qilian Mountains, China: A Quantitative Analysis

Fusen¹,

Zhang²,

Li³

et al. 2023

Pol. J. Environ. Stud.

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Soil water-heat plays a significant role in land surface processes and has an impact on almost all ecosystem processes and functions practically. However, the controls of soil water-heat by environmental factors remain to be elucidated. In this study, relationships of soil water-heat with environmental factors in the Qilian Mountains, China were quantified using data obtained from a regional soil survey during the summer of 2019. Our results showed that soil water content (SWC) depicted a trend of being high in the east and low in the west, and soil temperature (ST) showed an opposite trend. The PLSPM suggested that topography, climate, vegetation, and soil properties had a similar control on SWC, with total effect values of 0.41, -0.34, 0.33, and -0.47, respectively. Soil properties and vegetation directly influenced SWC, topography indirectly influenced SWC by altering climate, and climate directly influenced SWC and indirectly through vegetation. Conversely, the factor controlling ST was topography (total effects = 0.39), which influenced ST directly and positively. The VPA indicated that the combination of environmental variables explained 64.26% of the variation in SWC and 27.69% of the variation in ST.

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Section: Control Factors For Swcmentioning

confidence: 99%

Environmental Factors Controls on Soil Water-Heat in the Qilian Mountains, China: A Quantitative Analysis

Fusen¹,

Zhang²,

Li³

et al. 2023

Pol. J. Environ. Stud.

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“…In arid regions, lake water resources (e.g., surface area, water level, and volume), vegetation (e.g., Normalized Difference Vegetation Index (NDVI), net primary productivity, and gross primary productivity), and hydroclimatic factors (e.g., temperature, precipitation, and runoff) have garnered global attention ( Jiapaer et al., 2011 ; Voss et al., 2013 ; Chen et al., 2020 ; Kooch et al., 2022 ; Liu et al., 2023 ). The relationships between lake surface area and hydroclimatic factors and between NDVI and hydroclimatic factors have been extensively scrutinized across various spatial scales ( Shen et al., 2017 ; Nourani et al., 2021 ; Ogou et al., 2022 ; Gbetkom et al., 2023 ). Previous studies have illustrated the strong correlations between lake surface area and variables like temperature and precipitation in arid regions.…”

Section: Introductionmentioning

confidence: 99%

Responses of vegetation cover to hydro-climatic variations in Bosten Lake Watershed, NW China

Ge,

Ding,

Amantai

et al. 2024

Front. Plant Sci.

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Amidst the backdrop of global climate change, it is imperative to comprehend the intricate connections among surface water, vegetation, and climatic shifts within watersheds, especially in fragile, arid ecosystems. However, these relationships across various timescales remain unclear. We employed the Ensemble Empirical Mode Decomposition (EEMD) method to analyze the multifaceted dynamics of surface water and vegetation in the Bosten Lake Watershed across multiple temporal scales. This analysis has shed light on how these elements interact with climate change, revealing significant insights. From March to October, approximately 14.9–16.8% of the areas with permanent water were susceptible to receding and drying up. Both the annual and monthly values of Bosten Lake’s level and area exhibited a trend of initial decline followed by an increase, reaching their lowest point in 2013 (1,045.0 m and 906.6 km2, respectively). Approximately 7.7% of vegetated areas showed a significant increase in the Normalized Difference Vegetation Index (NDVI). NDVI volatility was observed in 23.4% of vegetated areas, primarily concentrated in the southern part of the study area and near Lake Bosten. Regarding the annual components (6 < T < 24 months), temperature, 3-month cumulative NDVI, and 3-month-leading precipitation exhibited the strongest correlation with changes in water level and surface area. For the interannual components (T≥ 24 months), NDVI, 3-month cumulative precipitation, and 3-month-leading temperature displayed the most robust correlation with alterations in water level and surface area. In both components, NDVI had a negative impact on Bosten Lake’s water level and surface area, while temperature and precipitation exerted positive effects. Through comparative analysis, this study reveals the importance of temporal periodicity in developing adaptive strategies for achieving Sustainable Development Goals in dryland watersheds. This study introduces a robust methodology for dissecting trends within scale components of lake level and surface area and links these trends to climate variations and NDVI changes across different temporal scales. The inherent correlations uncovered in this research can serve as valuable guidance for future investigations into surface water dynamics in arid regions.

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Enhancing resilience against geological hazards and soil erosion through sustainable vegetation management: A case study in Shaanxi Province

Wang,

Yao,

Zhao

et al. 2023

Journal of Cleaner Production

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Investigation of changes in vegetation cover associated with changes in its hydro-climatic drivers in recent decades over North Sub-Saharan Africa

Cited by 4 publications

References 72 publications

Environmental Factors Controls on Soil Water-Heat in the Qilian Mountains, China: A Quantitative Analysis

Environmental Factors Controls on Soil Water-Heat in the Qilian Mountains, China: A Quantitative Analysis

Responses of vegetation cover to hydro-climatic variations in Bosten Lake Watershed, NW China

Enhancing resilience against geological hazards and soil erosion through sustainable vegetation management: A case study in Shaanxi Province

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